E: Extract DDL file needed to duplicate database.

e：提取复制数据库所需的DDL文件。

youdao

Easy duplication. By creating a template containing your database Settings, you can easily create a duplicate database without specifying parameters twice.

容易复制。用你建数据库的模板，可以容易的复制一个相同数据库，而不用再一次设置参数。

youdao

Data cleaning and transformation is an important area of data warehouse, the method for detecting approximately duplicate database record is one of technology difficulties.

数据清理转换是数据仓库中的一个重要研究领域，其技术难点之一是重复记录的识别。

youdao

"This has made things more difficult but there were duplicate passports and widespread abuse of the system even when the national equine database was around, " he said.

BBC: Science & Environment